US3586913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High voltage lightning arrester having a discharge surge counting device mounted on its top terminal by insulating means
Assignee: General Electric Co
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Filing: 1970-01-26
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Granted: 1971-06-22
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Expires: 1990-01-26
Abstract
Abstract A high voltage lightning arrester having a vertical height in excess of 20 feet is provided with a discharge surge counting device mounted adjacent its uppermost terminal by insulating members that are so arranged as to prevent them from being subjected to stresses that could break or damage them when the lightning arrester is subjected to horizontal torque-producing forces by high velocity winds.
Inventors
- 👤 Arthur A Olsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:17
CPC Classifications
H; H01; H01T; H01T1/00; H01T1/12
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
168 words
In combination, a high voltage surge arrester having an elongated insulating housing adapted to be mounted with its longitudinal axis in a substantially vertical plane, an electric conductor terminal mounted on the top end of said housing, another terminal mounted on the bottom end of said housing, a plurality of spark gaps mounted in said housing and electrically connected in series relationship between said top and bottom terminals thereby to normally insulate said terminals from each other and to form a current discharge path between said terminals when said spark gaps are sparked over by a surge voltage, a surge counting device electrically connected in series with said discharge path to form the only current conducting circuit between said top terminal and said spark gaps so that substantially all of the discharge current through the arrester passes through said counting device, insulating means mounted between said top terminal and said spark gaps to prevent conducting paths being formed in parallel with the conducting path through said counting device.
Claim 2
Dependent Claim
168 words
In combination, a high voltage surge arrester having an elongated insulating housing adapted to be mounted with its longitudinal axis in a substantially vertical plane, an electric conductor terminal mounted on the top end of said housing, another terminal mounted on the bottom end of said housing, a plurality of spark gaps mounted in said housing and electrically connected in series relationship between said top and bottom terminals thereby to normally insulate said terminals from each other and to form a current discharge path between said terminals when said spark gaps are sparked over by a surge voltage, a surge counting device electrically connected in series with said discharge path to form the only current conducting circuit between said top terminal and said spark gaps so that substantially all of the discharge current through the arrester passes through said counting device, insulating means mounted between said top terminal and said spark gaps to prevent conducting paths being formed in parallel with the conducting path through said counting device.
Claim 3
Dependent Claim
61 words
The invention as in claim 1 wherein said insulating means comprises a plurality of insulating cylinders mounted between said top terminal and said counting device, said insulating cylinders being formed of a material that has a compressive strength no greater than that of glass, and including an electrical conductor extending through said insulating cylinders to form part of said discharge path.
Claim 4
Dependent Claim
79 words
The invention as in claim 2 wherein said plurality of insulating cylinders comprises at least one set of a pair of mechanical load-bearing cylinders and a single non-load-bearing sleeve, said load-bearing cylinders being mounted on opposite sides of said top terminal so their respective apertures are in substantial alignment with an aperture through said terminal, said non-load-bearing sleeve being mounted coaxially within said load-bearing cylinders to insulate the top terminal from said electrical conductor extending through the insulating cylinders.
Claim 5
Dependent Claim
23 words
The invention as in claim 3 wherein said plurality of cylinders comprises three sets of two load-bearing cylinders and one non-load-bearing sleeve each.
Claim 6
Dependent Claim
73 words
The invention as in claim 2 wherein said counting device comprises an electromechanical register that produces a visible indication of the number of overvoltage surges discharged through the arrester and including manually adjustable mounting means whereby said counting device is mounted in a movable manner to enable positioning of it to assure optimum visual inspection of said register from a predetermined point adjacent and below and away from the bottom of the arrester.
Claim 7
Dependent Claim
32 words
The invention as in claim 5 including clamping means for securing said adjustable mounting means in a predetermined position thereby to retain said counting device in said position for optimum visual inspection.
Claim 8
Dependent Claim
16 words
The invention as in claim 6 wherein said housing is at least 20 feet in height.
Claim 9
Dependent Claim
27 words
The invention as in claim 5 wherein the cross-sectional area of the arrester at a vertical plane along its longitudinal axis is at least 30 square feet.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |